From: "Måns Rullgård" <mans@mansr.com>
To: Ariel Elkin <ariel@arivibes.com>
Cc: sox-users@lists.sourceforge.net
Subject: Re: System audio recording have very low amplitude
Date: Thu, 30 Jul 2020 16:01:12 +0100 [thread overview]
Message-ID: <yw1xwo2lyrlz.fsf@mansr.com> (raw)
In-Reply-To: <4DB5F953-1F90-4630-A877-D2731628CCC8@arivibes.com> (Ariel Elkin's message of "Thu, 30 Jul 2020 14:30:53 +0100")
Ariel Elkin <ariel@arivibes.com> writes:
>> What OS are you using? (I see from those links that the apps are MacOS, which I know nothing about. Someone else might do; also what version?)
>
> I’m using macOS 10.15
>
>> Does MacOS have an internal audio mixer that determines the levels of sound from various apps and how they go to other devices?
> No exactly, but there’s an app (Audio MIDI Setup) which will allow you to set the input/output volume and sample rate of your audio hardware. I’ve checked there already and ensured that the input/output volume of Loopback and BlackHole were at 1.
>
> Can someone clarify if this command
>
> rec test-output.aiff
>
> could do any implicit gain attenuation? It’s not clear from the documentation.
If you add the -V flag, the sox/play/rec commands will list the full
effect chain, including automatically added conversions.
--
Måns Rullgård
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next prev parent reply other threads:[~2020-07-30 15:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 13:30 System audio recording have very low amplitude Ariel Elkin
2020-07-30 15:01 ` Måns Rullgård [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-07-29 9:39 Ariel Elkin
2020-07-29 20:04 ` Jeremy Nicoll - ml sox users
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